231294887 has 4 divisors (see below), whose sum is σ = 231368136. Its totient is φ = 231221640.

The previous prime is 231294871. The next prime is 231294901. The reversal of 231294887 is 788492132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231294887 - 2⁴ = 231294871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231294487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31664 + ... + 38277.

It is an arithmetic number, because the mean of its divisors is an integer number (57842034).

Almost surely, 2^231294887 is an apocalyptic number.

231294887 is a deficient number, since it is larger than the sum of its proper divisors (73249).

231294887 is an equidigital number, since it uses as much as digits as its factorization.

231294887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73248.

The product of its digits is 193536, while the sum is 44.

The square root of 231294887 is about 15208.3821296021. The cubic root of 231294887 is about 613.8402246365.

The spelling of 231294887 in words is "two hundred thirty-one million, two hundred ninety-four thousand, eight hundred eighty-seven".